Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5dfb61f6e53fab5…

MALICIOUS

PDF

357.2 KB Created: 2015-08-28 11:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f6cdf50621d37217f4fadb0c53fd8540 SHA-1: 4ecd5555161728ff7922b2793cc4d30a6935be08 SHA-256: d5dfb61f6e53fab501892537b0e383dd0564f3cf9af6fa386b5af35d82b5bc09
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient to classify the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D1%84%D0%B8%D0%BB%D0%B8%D0%BF%D0%BF+%D0%BA%D0%B8%D1%80%D0%BA%D0%BE%D1%80%D0%BE%D0%B2+%D0%B8+%D0%BD%D0%B0%D1%81%D1%82%D1%8F+%D0%BF%D0%B5%D1%82%D1%80%D0%B8%D0%BA+%D1%81%D0%BD%D0%B5%D0%B3+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802547_akt__o__predostavlenii_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802491_programma__dlya__obmena_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802671_skachat__igruy__cherez_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054ece.bin
d6b6b0ce4c9c1af8a7b745eb2e0e25e74d9d2f06ec9433d8bfc554b53b8bac3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54ECE 8308 bytes
font_01_sfnt_off0005673d.bin
2018988580281e6eb30a494af1dc056ef44b475827a4d0997e5e8401614caea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5673D 14372 bytes

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